diff --git a/core/modules/overlay/overlay-parent.js b/core/modules/overlay/overlay-parent.js
index 6537cb640f2..c8f56e54b19 100644
--- a/core/modules/overlay/overlay-parent.js
+++ b/core/modules/overlay/overlay-parent.js
@@ -861,17 +861,6 @@ Drupal.overlay.getDisplacement = function (region) {
   var lastDisplaced = $('.overlay-displace-' + region + ':last');
   if (lastDisplaced.length) {
     displacement = lastDisplaced.offset().top + lastDisplaced.outerHeight();
-
-    // In modern browsers (including IE9), when box-shadow is defined, use the
-    // normal height.
-    var cssBoxShadowValue = lastDisplaced.css('box-shadow');
-    var boxShadow = (typeof cssBoxShadowValue !== 'undefined' && cssBoxShadowValue !== 'none');
-    // In IE8 and below, we use the shadow filter to apply box-shadow styles to
-    // the toolbar. It adds some extra height that we need to remove.
-    if (!boxShadow && /DXImageTransform\.Microsoft\.Shadow/.test(lastDisplaced.css('filter'))) {
-      displacement -= lastDisplaced[0].filters.item('DXImageTransform.Microsoft.Shadow').strength;
-      displacement = Math.max(0, displacement);
-    }
   }
   return displacement;
 };
diff --git a/core/modules/toolbar/toolbar.css b/core/modules/toolbar/toolbar.css
index 80712bf3eb5..ec6f35ccec4 100644
--- a/core/modules/toolbar/toolbar.css
+++ b/core/modules/toolbar/toolbar.css
@@ -39,11 +39,7 @@ body.toolbar-drawer {
   position: fixed;
   right: 0;
   top: 0;
-  -moz-box-shadow: 0 3px 20px #000;
-  -webkit-box-shadow: 0 3px 20px #000;
   box-shadow: 0 3px 20px #000;
-  filter: progid:DXImageTransform.Microsoft.Shadow(color=#000000, direction='180', strength='10');
-  -ms-filter: "progid:DXImageTransform.Microsoft.Shadow(color=#000000, direction='180', strength='10')";
   z-index: 600;
 }
 #toolbar div.collapsed {
diff --git a/core/modules/toolbar/toolbar.js b/core/modules/toolbar/toolbar.js
index ee8bddbdc62..afec44ac4f4 100644
--- a/core/modules/toolbar/toolbar.js
+++ b/core/modules/toolbar/toolbar.js
@@ -98,15 +98,6 @@ Drupal.toolbar.toggle = function() {
 Drupal.toolbar.height = function() {
   var $toolbar = $('#toolbar');
   var height = $toolbar.outerHeight();
-  // In modern browsers (including IE9), when box-shadow is defined, use the
-  // normal height.
-  var cssBoxShadowValue = $toolbar.css('box-shadow');
-  var boxShadow = (typeof cssBoxShadowValue !== 'undefined' && cssBoxShadowValue !== 'none');
-  // In IE8 and below, we use the shadow filter to apply box-shadow styles to
-  // the toolbar. It adds some extra height that we need to remove.
-  if (!boxShadow && /DXImageTransform\.Microsoft\.Shadow/.test($toolbar.css('filter'))) {
-    height -= $toolbar[0].filters.item("DXImageTransform.Microsoft.Shadow").strength;
-  }
   return height;
 };